"tRF BoB 50" is a formative with a microBUS structure. It is an effective and easy solution for adding 868 MHz RF communication to your design.It features the Telit LE50-868MHz transceiver module,a SMA connector for an antenna also two radio communication( Tx - Rx ) LEDs. tBoB RF 50 communicateswith the target board microcontroller via microBUS UART ( Rx, Tx), AN, RST, PWM and INT lines.It has a LED diode in order to power indicator.